21473595428832 has 48 divisors (see below), whose sum is σ = 62631320003280. Its totient is φ = 7157865142656.

The previous prime is 21473595428827. The next prime is 21473595428861. The reversal of 21473595428832 is 23882459537412.

21473595428832 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 3 + 5 + 9 + 542 + 8 + 83 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×21473595428832² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21473595428832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12426848343 + ... + 12426850070.

It is an arithmetic number, because the mean of its divisors is an integer number (1304819166735).

Almost surely, 2^{21473595428832} is an apocalyptic number.

It is an amenable number.

21473595428832 is an abundant number, since it is smaller than the sum of its proper divisors (41157724574448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21473595428832 is a wasteful number, since it uses less digits than its factorization.

21473595428832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24853698432 (or 24853698418 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 63.

The spelling of 21473595428832 in words is "twenty-one trillion, four hundred seventy-three billion, five hundred ninety-five million, four hundred twenty-eight thousand, eight hundred thirty-two".